STTS424E02BDN3F STMicroelectronics, STTS424E02BDN3F Datasheet - Page 21

• Manufacturer Part Number: STTS424E02BDN3F
• Description: IC TEMP SENSOR 2KB EEPRM 8-TDFN
• Manufacturer: STMicroelectronics

Specifications of STTS424E02BDN3F

• Function: Temp Monitoring System (Sensor)
• Topology: ADC (Sigma Delta), Register Bank
• Sensor Type: Internal
• Sensing Temperature: -40°C ~ 125°C
• Output Type: I²C™/SMBus™
• Output Alarm: Yes
• Output Fan: No
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-TDFN
• Temperature Threshold: + 150 C
• Full Temp Accuracy: +/- 1 C
• Digital Output - Bus Interface: 2-Wire, I2C
• Digital Output - Number Of Bits: 10 bit
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 2.7 V
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Supply Current: 100 uA
• For Use With: 497-8843 - EVAL DAUGHTER STTS424E02 8-TDFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-8284-2

STTS424E02
Table 9.
1.
2. T
3.
Figure 8.
1. T
2. T
3. HYS = Absolute value of selected hysteresis
Table 10.
15:11
10:9
Bit
As this device is used in DIMM (memory modules) applications, it is strongly recommended that only the active-low polarity (default) is used.
This is the recommended configuration for the STTS424E02.
clear event bit (writing to this bit will have no effect on overall device functioning).
Writing to this register has no effect on overall device functioning in comparator mode. When read, this bit will always return a logic '0' result.
he actual incident causing the event can be determined from the read temperature register. Interrupt events can be cleared by writing to the
H
L
= Value stored in the alarm temperature lower boundary trip register.
= Value stored in the alarm temperature upper boundary trip register.
Clears
Hysteresis enable (see
– 00 = Hysteresis is disabled (this is the default).
– 01 = Hysteresis is enabled at 1.5 °C.
– 10 = Hysteresis is enabled at 3 °C.
– 11 = Hysteresis is enabled at 6 °C.
Hysteresis applies to all limits when the temperature is dropping below the threshold so that once the
temperature is above a given threshold, it must drop below the threshold minus the hysteresis in order to
be flagged as an interrupt event. Note that hysteresis is also applied to the EVENT pin functionality. When
either of the lock bits is set, these bits cannot be altered.
Reserved for future use. These bits will always read ‘0’ and writing to them will have no effect. For
future compatibility, all RFU bits must be programmed as ‘0’.
Sets
Above Window bit
Below Window bit
Configuration register bit definitions
Hysteresis
Hysteresis as applied to temperature movement
Temperature slope
T H
T L
Falling
Rising
Figure 8
Below alarm window bit
and
Table
Doc ID 13448 Rev 8
Temperature
10)
threshold
T
L
Definition
- HYS
T
L
T H - HYS
Temperature slope
Falling
Rising
Above alarm window bit
Temperature sensor registers
T L - HYS
Temperature
threshold
T
H
T
- HYS
H
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